踝关节生物力学 ppt课件-PPT课件.ppt

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1、AnkleAnatomicalStructuresTibiaFibularTalusTibia胫骨Thisisthestrongestlargestboneofthelowerleg.Itbearsweightandthebonecreatesthemedialmalleoli(thebumpontheinsideofyourankle)whichisthemedialaspectofthemortiseorthe(hole)thatthetaluslieswithin.这是最强壮的小腿骨。它具有承重

2、和形成了内侧支撑面(组成脚踝的凹面)，能与距骨相契合TheTibiaisthemedialboneandlargestboneofthelowerleg.Tibia胫骨是小腿的最大和支撑骨的骨头。Fibula腓骨Thisisasmallerlateralboneofthelowerleg.Itisnotvitalforweightbearingyetitcomprisesthelateral(outside)aspectofthemalleoliandmakesupthelateralaspectof

3、themortise.这是小腿的一根更小的外侧骨头。它不承重，它是踝关节的外侧支撑面。Fibula--->Thefibulaislongerandnonweightbearing.Itmakesupthelateralaspectofthemortise.Thelateralmalleoliliesinferior(below)themedialmalleoli它比较长和不承重。并组成踝关节外侧面。并低于内侧面_______________________TalusThisbonetransmitst

4、heforcesfromthecalcaneusupintothetibiaandalsoallowsthearticulationsofPlantarFlexion(pointingthefootdownward)DorsiflexionorpullingthefootupwardandInversion(rollingthefootinward)andEversion(rollingthefootoutward)------TalusTalocruralJointTheformationofth

5、emortise(ahole)bythemedialmalleoli(Tibia)andlateralmalleoli(fibula)withthetaluslyinginbetweenthemmakesupthetalocruraljoint.Thisisahingejointandallowsmostofthemotionwithplantarflexionanddorsiflexion.________________________________TalocruralJt.SubtalarJo

6、intThearticulationbetweenthetalusandthecalcaneusisreferredtoasthesubtalarjoint.Motionallowedbythisjointisinversion(rollinward)/eversion(rolloutward)aswellasrearfootpronation(inwardtiltofthecalcaneus)andsupination(outwardtiltofthecalcaneus).calcaneusTalu

7、s---SubtalarJointMedialaspectoffootAnkleLigamentsTherearethreelateralligamentspredominantlyresponsibleforthesupportandmaintenanceofboneapposition(bestpossiblefit).Theseligamentspreventinversionofthefoot.Theseligamentsare:AnteriortalofibularligamentCalc

8、aneofibularligamentPosteriortalofibularligamentTalusFibulaTibiaAnt.TalofibularLigamentAnt.TibiofibularLig.Post.TibiofibularLig.<-Fibula<-Ant.TalofibularLig<-TalusPeronealTendonsCalcaneofibularLigamentCalcaneusSubtalarJointSpaceC